编辑＃2：我刚刚从4.0.1降级回Rails 4.0.0并且它解决了问题...如果有人知道是什么导致它以及如何安全地升级到4.0 .1，请让我知道。或者这可能是应该报告的4.0.1或HAML的问题？我不知道在哪里举报......
我的HAML视图，昨天工作正常，我没有改变，不知何故不再工作了。
观点：
1 =form_for @document do |f|
2
3 =f.text_field :title, placeholder: "Title"
4
5 =f.text_field :slug, placeholder: "URL slug"
6
7 ... and more
它从第1行抛出的错误：
undefined method `[]' for nil:NilClass
@document在控制器中实例化为Document.new。就像我说的，这段代码昨天工作正常，我没有改变视图或控制器。我今天从Rails 4.0.0升级到4.0.1 - 这可能是罪魁祸首吗？
我的Gemfile.lock：
GIT
remote: git://github.com/adzap/active_enum.git
revision: 280548e3954d8f9e032968dd2757b7e5862cdf49
specs:
active_enum (0.9.12)
activesupport (>= 3.0)
GIT
remote: git://github.com/sporkrb/spork-rails.git
revision: 0dd45e59d3237b4c8f9efc215b46d9c07072a95e
specs:
spork-rails (4.0.0)
rails (>= 3.0.0, < 5)
spork (>= 1.0rc0)
GEM
remote: https://rubygems.org/
specs:
actionmailer (4.0.1)
actionpack (= 4.0.1)
mail (~> 2.5.4)
actionpack (4.0.1)
activesupport (= 4.0.1)
builder (~> 3.1.0)
erubis (~> 2.7.0)
rack (~> 1.5.2)
rack-test (~> 0.6.2)
active_model_serializers (0.8.1)
activemodel (>= 3.0)
activemodel (4.0.1)
activesupport (= 4.0.1)
builder (~> 3.1.0)
activerecord (4.0.1)
activemodel (= 4.0.1)
activerecord-deprecated_finders (~> 1.0.2)
activesupport (= 4.0.1)
arel (~> 4.0.0)
activerecord-deprecated_finders (1.0.3)
activesupport (4.0.1)
i18n (~> 0.6, >= 0.6.4)
minitest (~> 4.2)
multi_json (~> 1.3)
thread_safe (~> 0.1)
tzinfo (~> 0.3.37)
annotate (2.5.0)
rake
ansi (1.4.3)
arel (4.0.1)
atomic (1.1.14)
aws-sdk (1.22.1)
json (~> 1.4)
nokogiri (>= 1.4.4, < 1.6.0)
uuidtools (~> 2.1)
bcrypt-ruby (3.1.2)
bootstrap-sass (2.3.1.0)
sass (~> 3.2)
builder (3.1.4)
capybara (2.1.0)
mime-types (>= 1.16)
nokogiri (>= 1.3.3)
rack (>= 1.0.0)
rack-test (>= 0.5.4)
xpath (~> 2.0)
capybara-webkit (1.0.0)
capybara (~> 2.0, >= 2.0.2)
json
celluloid (0.15.2)
timers (~> 1.1.0)
childprocess (0.3.9)
ffi (~> 1.0, >= 1.0.11)
climate_control (0.0.3)
activesupport (>= 3.0)
cocaine (0.5.2)
climate_control (>= 0.0.3, < 1.0)
coderay (1.0.9)
coffee-rails (4.0.0)
coffee-script (>= 2.2.0)
railties (>= 4.0.0.beta, < 5.0)
coffee-script (2.2.0)
coffee-script-source
execjs
coffee-script-source (1.5.0)
columnize (0.3.6)
database_cleaner (1.1.1)
debugger (1.6.2)
columnize (>= 0.3.1)
debugger-linecache (~> 1.2.0)
debugger-ruby_core_source (~> 1.2.3)
debugger-linecache (1.2.0)
debugger-ruby_core_source (1.2.3)
devise (3.1.1)
bcrypt-ruby (~> 3.0)
orm_adapter (~> 0.1)
railties (>= 3.2.6, < 5)
thread_safe (~> 0.1)
warden (~> 1.2.3)
diff-lcs (1.2.4)
dropbox-sdk (1.6.1)
json
erubis (2.7.0)
ethon (0.5.12)
ffi (>= 1.3.0)
mime-types (~> 1.18)
execjs (1.4.0)
multi_json (~> 1.0)
factory_girl (4.1.0)
activesupport (>= 3.0.0)
factory_girl_rails (4.1.0)
factory_girl (~> 4.1.0)
railties (>= 3.0.0)
faker (1.2.0)
i18n (~> 0.5)
fakeweb (1.3.0)
faraday (0.8.8)
multipart-post (~> 1.2.0)
ffi (1.9.0)
figaro (0.7.0)
bundler (~> 1.0)
rails (>= 3, < 5)
font-awesome-sass-rails (3.0.2.2)
railties (>= 3.1.1)
sass-rails (>= 3.1.1)
formatador (0.2.4)
guard (2.0.5)
formatador (>= 0.2.4)
listen (~> 2.0)
lumberjack (~> 1.0)
pry (>= 0.9.12)
thor (>= 0.18.1)
guard-rspec (1.2.1)
guard (>= 1.1)
guard-spork (1.5.1)
childprocess (>= 0.2.3)
guard (>= 1.1)
spork (>= 0.8.4)
haml (4.0.4)
tilt
hashie (2.0.5)
hashr (0.0.22)
hike (1.2.3)
httpauth (0.2.0)
i18n (0.6.5)
jquery-rails (3.0.1)
railties (>= 3.0, < 5.0)
thor (>= 0.14, < 2.0)
json (1.8.0)
jwt (0.1.8)
multi_json (>= 1.5)
libv8 (3.16.14.3)
listen (2.1.0)
celluloid (>= 0.15.2)
rb-fsevent (>= 0.9.3)
rb-inotify (>= 0.9)
lumberjack (1.0.4)
mail (2.5.4)
mime-types (~> 1.16)
treetop (~> 1.4.8)
method_source (0.8.2)
mime-types (1.25.1)
minitest (4.7.5)
multi_json (1.8.2)
multipart-post (1.2.0)
nokogiri (1.5.9)
oauth2 (0.8.1)
faraday (~> 0.8)
httpauth (~> 0.1)
jwt (~> 0.1.4)
multi_json (~> 1.0)
rack (~> 1.2)
omniauth (1.1.4)
hashie (>= 1.2, < 3)
rack
omniauth-github (1.1.0)
omniauth (~> 1.0)
omniauth-oauth2 (~> 1.1)
omniauth-oauth2 (1.1.1)
oauth2 (~> 0.8.0)
omniauth (~> 1.0)
orm_adapter (0.4.0)
paperclip (3.5.1)
activemodel (>= 3.0.0)
activesupport (>= 3.0.0)
cocaine (~> 0.5.0)
mime-types
pg (0.15.1)
polyglot (0.3.3)
protected_attributes (1.0.3)
activemodel (>= 4.0.0, < 5.0)
pry (0.9.12.2)
coderay (~> 1.0.5)
method_source (~> 0.8)
slop (~> 3.4)
rack (1.5.2)
rack-test (0.6.2)
rack (>= 1.0)
rails (4.0.1)
actionmailer (= 4.0.1)
actionpack (= 4.0.1)
activerecord (= 4.0.1)
activesupport (= 4.0.1)
bundler (>= 1.3.0, < 2.0)
railties (= 4.0.1)
sprockets-rails (~> 2.0.0)
rails_12factor (0.0.2)
rails_serve_static_assets
rails_stdout_logging
rails_serve_static_assets (0.0.1)
rails_stdout_logging (0.0.3)
railties (4.0.1)
actionpack (= 4.0.1)
activesupport (= 4.0.1)
rake (>= 0.8.7)
thor (>= 0.18.1, < 2.0)
rake (10.1.0)
rb-fsevent (0.9.3)
rb-inotify (0.9.2)
ffi (>= 0.5.0)
ref (1.0.5)
rest-client (1.6.7)
mime-types (>= 1.16)
rspec-core (2.14.7)
rspec-expectations (2.14.3)
diff-lcs (>= 1.1.3, < 2.0)
rspec-mocks (2.14.3)
rspec-rails (2.14.0)
actionpack (>= 3.0)
activesupport (>= 3.0)
railties (>= 3.0)
rspec-core (~> 2.14.0)
rspec-expectations (~> 2.14.0)
rspec-mocks (~> 2.14.0)
sass (3.2.12)
sass-rails (4.0.0)
railties (>= 4.0.0.beta, < 5.0)
sass (>= 3.1.10)
sprockets-rails (~> 2.0.0)
slop (3.4.6)
spork (1.0.0rc4)
sprockets (2.10.1)
hike (~> 1.2)
multi_json (~> 1.0)
rack (~> 1.0)
tilt (~> 1.1, != 1.3.0)
sprockets-rails (2.0.1)
actionpack (>= 3.0)
activesupport (>= 3.0)
sprockets (~> 2.8)
therubyracer (0.12.0)
libv8 (~> 3.16.14.0)
ref
thor (0.18.1)
thread_safe (0.1.3)
atomic
tilt (1.4.1)
timers (1.1.0)
tire (0.6.1)
activemodel (>= 3.0)
activesupport
ansi
hashr (~> 0.0.19)
multi_json (~> 1.3)
rake
rest-client (~> 1.6)
treetop (1.4.15)
polyglot
polyglot (>= 0.3.1)
typhoeus (0.6.3)
ethon (~> 0.5.11)
tzinfo (0.3.38)
uglifier (2.2.1)
execjs (>= 0.3.0)
multi_json (~> 1.0, >= 1.0.2)
uuidtools (2.1.4)
vcr (2.5.0)
warden (1.2.3)
rack (>= 1.0)
xpath (2.0.0)
nokogiri (~> 1.3)
PLATFORMS
ruby
DEPENDENCIES
active_enum!
active_model_serializers
annotate (= 2.5.0)
aws-sdk
bootstrap-sass (= 2.3.1.0)
capybara (= 2.1.0)
capybara-webkit (= 1.0.0)
childprocess (= 0.3.9)
coffee-rails (= 4.0.0)
coffee-script-source (= 1.5.0)
database_cleaner (~> 1.1.1)
debugger
devise (= 3.1.1)
dropbox-sdk (= 1.6.1)
execjs (= 1.4.0)
factory_girl_rails (= 4.1.0)
faker (~> 1.2.0)
fakeweb (= 1.3.0)
figaro (= 0.7.0)
font-awesome-sass-rails (= 3.0.2.2)
guard-rspec (= 1.2.1)
guard-spork (= 1.5.1)
haml
jquery-rails (= 3.0.1)
json (= 1.8.0)
nokogiri (= 1.5.9)
omniauth (= 1.1.4)
omniauth-github (= 1.1.0)
paperclip
pg (= 0.15.1)
protected_attributes
rails (= 4.0.1)
rails_12factor
rspec-mocks
rspec-rails
sass-rails
spork-rails!
therubyracer (= 0.12.0)
tire
typhoeus (= 0.6.3)
uglifier (>= 1.0.3)
vcr (= 2.5.0)
另外，我刚刚注意到当我加载Rails控制台时，当我在任何 ActiveRecord模型上调用.new时，我现在收到以下错误：{{1} }。这两个错误可能有关系吗？发生了什么事？
编辑：根据要求，这是完整的错误跟踪：
Object doesn't support #inspect答案 0 :(得分：10)
看起来它与protected_attributes gem的版本相关，与rails 4.0.1不利。尝试升级到protected_attributes 1.0.5。
答案 1 :(得分：0)
pra mim resolveu assim。
params[:adm_video][:codigo] =https://www.youtube.com/watch?v=73egYHwYHzQ
@adm_video[:codigo] = parse_youtube(params[:adm_video][:codigo])
def parse_youtube(url)
if !url.blank?
regex = /(?:.be\/|\/watch\?v=|\/(?=p\/))([\w\/\-]+)/
return url.match(regex)[1]
end
end
return =＆＃34; 73egYHwYHzQ＆＃34;插入数据库。